Installed!!
Thank you for all the nice comments. I installed it this afternoon and used it this evening! Flawless! Dishes clean, dry, & cool to the touch (a nice feature). Although it was noisier than the tall tub it replaced, it was not by that much.
The machine was originally a 23 series. I swapped out the controls, panels, wiring harness, etc. and created two additional circuits to make everything work.
To achieve the reversing drain mode I created a circuit consisting of 3 relays. It is activated by the circuit for the drain valve. When the timer calls for drain, the relay opens the circuit to the motor; simultaneously a time delay relay (#2) activates after 3 seconds, closing a circuit to a 3rd relay which switches the wash & drain contacts re-starting the motor in the drain direction. The timed relay now runs for 77 seconds fully draining the machine. After this time elapses the timed relay opens, breaking the circuit to the contact switching relay (#3), stopping the motor. A few seconds later the dishwasher timer moves to the next increment, the drain valve circuit opens, and the motor re-starts in the wash direction. Luckily the KDS19 timers have 90 second increments and the drain increment is the full time (unlike the KDS 17).
To achieve the main wash delay I created a second circuit with a simple relay combined with another time delay relay. It is triggered by the Wash light. When the wash light circuit closes it activates the 1st relay which splits the power in two directions. The first direction is back to the Wash light to energize it. The second direction is to the time delay relay. I wired the timer motor through this relay. When this relay is energized it delays opening the timer motor circuit for 4:45; after that elapses the relay opens the timer motor circuit for 20 min. The 4:45 delay is required to be sure the timer has moved past the point where the detergent cup bi-metal is de-energized. The water heater is activated during the main wash and this delay gets the water to about 145-147 degrees. It provides a total wash time of 29 minutes in the Normal cycle, and 24 minutes in the Light cycle and the Fast Wash/No Dry cycle (but there is still no pre-wash or last rinse heating period in that cycle).
Here are pics of the relay circuits and of the machine installed. I didn't get a before & after picture of tonight's load, but it was a medium soiled load. The Light Wash cycle did the job in about 1.5 hours (the first water heating takes more time in this machine since it only has a 950 watt element). But the heating time helps loosen food debris due the hot, humid environment that is created during the heating time.
The first 2 pics are of the drain circuit. The 3rd pic is of the wash delay circuit. The remaining pics are of it installed (& some operating). I'm happy with the paint match to my cabinetry; I got it pretty close!
I am truly psyched to have this installed; it has been a pet project for some time now. I love this conversion!! I hope you enjoy the pics.
